I've talked often about Dr. Raymond Moody. His book, Life After Life is the first book I came across that explained how I was able to see the spirit of my dad when he had died. Back then, there were no books. Back East, no one was talking about any of this.
Since then, everything has changed. Many people who've had near-death experiences have stepped forward to talk about them and write about them. Eben Alexander, Anita Moorjani are some of them, and much earlier Dannion Brinkley, as well as many, many others.
Here, Dr. Moody gives an utterly riveting account of his work with people who've had near-death experiences and how they describe their experience.
The main point is that death is a pleasant experience. Most people who've had a near-death experience do not want to come back -- no matter what kind of great life they've had here or who they'll be leaving behind; it's that wonderful.
The other point, obviously, is that we don't really "die." Once out of body, we remain who we are. Our consciousness operates outside the body. Later on, in the journey into the light, this begins to change as we integrate our soul knowledge into our earthly experiences.
Carlos Castaneda, in his many books, talks about death as being always with the spiritual warrior -- as a guide for life.
Robert Monroe taught people how to leave the body at will which, he believed, was important knowledge when it came to the time when we leave our bodies permanently. His experiences are chronicled in his three, what I believe to be, very important books.
For all books that inform about the nature of reality and near-death experiences, see The Nature of Reality page.